/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package controllers.admin;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.DiskFileUpload;
import org.apache.commons.fileupload.FileItem;

/**
 *
 * @author triet.to
 */
public class ProcessUploadFilesServlet extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {

            System.out.println("Content Type =" + request.getContentType());

            // Create a factory for disk-based file items
            DiskFileUpload fu = new DiskFileUpload();
            // If file size exceeds, a FileUploadException will be thrown
            fu.setSizeMax(5000000);

            List fileItems = fu.parseRequest(request);
            Iterator itr = fileItems.iterator();

            while (itr.hasNext()) {
                FileItem fi = (FileItem) itr.next();

                //Check if not form field so as to only handle the file inputs
                //else condition handles the submit button input
                if (!fi.isFormField()) {
                    System.out.println("nNAME: " + fi.getName());
                    System.out.println("SIZE: " + fi.getSize());
                    if("".equals(fi.getName())){
                        continue;
                    }
                    //System.out.println(fi.getOutputStream().toString());
                    ServletContext sc = getServletContext();
                    String path = (sc.getRealPath("/Files"));

                    File fNew = new File(path, fi.getName());

                    System.out.println(fNew.getAbsolutePath());
                    fi.write(fNew);
                } else {
                    System.out.println("Field =" + fi.getFieldName());
                }
            }
            out.println("Upload success");
            response.sendRedirect("/BookStoreWeb/Admin/AdminHome.jsp");
        } catch (Exception e) {
        } finally {
            out.close();
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
